Yer-2 (ACh-30B) (e)

This page is about the Russian bomber Yer-2 (ACh-30B) (e). For the Late version, see Yer-2 (ACh-30B) (l). For other versions, see Yer-2 (Family).

Yer-2 (ACh-30B) (e)

Pe-8

Yer-2 (ACh-30B) (l)

Yer-2 (ACh-30B) (e)

Pe-8

Yer-2 (ACh-30B) (l)

USSR

IV Rank

Battle rating:

AB	RB	SB
4.7	4.3	5.3

Class:

Bomber

Long Range bomber

Research:46 000

Purchase:155 000

Show in game

Description

The Yer-2 (ACh-30B) Early is a rank IV Russian bomber with a battle rating of 4.7 (AB), 4.3 (RB), and 5.3 (SB). It has been in the game since the start of the Open Beta Test prior to Update 1.27.

The Yer-2 (ACh-30B) is a long-range twin-engine bomber capable of carrying a very heavy payload of bombs (up to 5,000 kg) over shorter distances. Unlike the earlier models, the Yer-2 (ACh-30B) equipped with Charomskiy ACh-30B diesel engines for improved fuel economy and range at the cost of some performance due to the heavier engines.

General info

Flight performance

Max speed

at 6 000 m415 km/h

Turn time48 s

Max altitude11 000 m

Engine2 х Charomskiy ACh-30

Type

Cooling systemAir

Take-off weight16 t

The Yer-2's ACh-30B diesel engines were optimised for fuel economy and not pure performance. Thus, the ACh-30B-engined model is actually slower than the earlier M-105-engined models, especially because the diesel engines are significantly heavier than the earlier gasoline engines. The other aspects of its flight performance are unremarkable compared to other contemporary heavy bombers. It should also be kept in mind that the already poor flight performance is significantly degraded when carrying the maximum 5,000 kg payload.

The Yer-2 is also by no means an agile aircraft in the first place and the airframe will not tolerate much G-load, hence it is very ill advised to make sudden control inputs with the aircraft unless playing in Arcade mode.

Characteristics	Max Speed (km/h at 6,000 m)		Max altitude (metres)	Turn time (seconds)		Rate of climb (metres/second)		Take-off run (metres)
	AB	RB		AB	RB	AB	RB
Stock	397	384	11000	49.1	50.1	7.9	7.8	1,800
Upgraded	453	415		47.0	48.0	11.7	9.5

Details

Features
Combat flaps	Take-off flaps	Landing flaps	Air brakes	Arrestor gear
✓	✓	✓	X	X

Limits
Wings (km/h)	Gear (km/h)	Flaps (km/h)			Max Static G
		Combat	Take-off	Landing	+	-
0	300	447	418	270	~4	~3

Optimal velocities (km/h)
Ailerons	Rudder	Elevators	Radiator
< 290	< 300	< 270	> 330

Survivability and armour

Crew5 people

Speed of destruction

Structural0 km/h

Gear300 km/h

• 15 mm steel plate behind the pilot
• 15 mm steel plate behind the co-pilot
• 15 mm steel plate in front of rear ball gunner

Modifications and economy

Repair costBasic → Reference

AB1 942 → 2 650

RB5 027 → 6 861

SB8 866 → 12 102

Total cost of modifications40 600

78 600

Talisman cost1 400

Crew training45 000

Experts155 000

Aces820

Research Aces440 000

Reward for battleAB / RB / SB

100 / 250 / 450 %

160 / 160 / 160 %

Modifications

Flight performance	Survivability	Weaponry
Fuselage repair Research: 2 000 Cost: 3 900 160 Radiator Research: 2 000 Cost: 3 900 160 Airframe Research: 2 300 Cost: 4 400 185 Compressor Research: 2 300 Cost: 4 400 185 Wings repair Research: 3 400 Cost: 6 600 270 Engine Research: 3 400 Cost: 6 600 270 Cover Research: 3 300 Cost: 6 400 270 Engine injection Research: 3 300 Cost: 6 400 270	EFS Research: 3 300 Cost: 6 400 270	ub_turret_belt_pack Research: 2 000 Cost: 3 900 160 Der-19-20 Research: 2 000 Cost: 3 900 160 ub_turret_new_gun Research: 2 300 Cost: 4 400 185 KD-3-240 Research: 2 300 Cost: 4 400 185 shvak_turret_belt_pack Research: 3 400 Cost: 6 600 270 shvak_turret_new_gun Research: 3 300 Cost: 6 400 270

Being a heavy strategic bomber, you should go for the bomb load upgrades first followed by turret 12 mm and 20 mm belts, as the ball ammo in the 12 mm belts is completely useless and the Berezin MG's belts are loaded with incendiary rounds, increasing the chance of starting fires on attackers. The rest of the modules are up to the player, but the survivability modules are recommended to withstand the beating you will be getting by fighters and interceptors.

Armaments

Suspended armament

The Yer-2 (ACh-30B) (e) can be outfitted with the following ordnance:

• 20 x 100 kg FAB-100sv bombs (2,000 kg total)
• 8 x 250 kg FAB-250sv bombs (2,000 kg total)
• 4 x 500 kg FAB-500sv bombs (2,000 kg total)
• 3 x 1,000 kg FAB-1000 bombs (3,000 kg total)
• 3 x 1,000 kg FAB-1000 bombs + 20 x 100 kg FAB-100sv bombs (5,000 kg total)
• 3 x 1,000 kg FAB-1000 bombs + 8 x 250 kg FAB-250sv bombs (5,000 kg total)
• 3 x 1,000 kg FAB-1000 bombs + 4 x 500 kg FAB-500sv bombs (5,000 kg total)

Defensive armament

The Yer-2 (ACh-30B) (e) is defended by:

• 1 x 20 mm ShVAK cannon, dorsal turret (200 rpg)
• 1 x 12.7 mm Berezin UB machine gun, nose turret (195 rpg)
• 1 x 12.7 mm Berezin UB machine gun, ventral turret (275 rpg)

Usage in battles

The Yer-2 with diesel ACh-30B engines is the last traditional heavy bomber in the Soviet line-up until the Tu-4, and it retains its previous models' strengths and weaknesses. The main draw of the diesel Yer-2s is the gigantic payload at its disposal (up to 5,000 kg), being the second best at the BR behind the British Lancaster. However, the heavier diesel engines mean that it is actually slower than the earlier M-105-engined variants.

The airframe itself is not very durable, and with only two engines, the aircraft cannot maintain flight if one engine is knocked out. As such, it is best to avoid any form of engagement at all costs. The late model diesel Yer-2 has a side-by-side pilot cockpit arrangement, but is otherwise near identical to the early diesel Yer-2.

Carrying the maximum payload will also significantly degrade the already underwhelming flight performance of the Yer-2. Because of this, some careful planning is required in order to be able to carry the payload to its target:

• High altitude bomber: The Yer-2 can attempt to climb to high altitudes in order to avoid attracting attention, but this is hampered by the poor performance the Yer-2 offers above 4,000 m due to its engine not receiving enough oxygen. While the safest playstyle, it is definitely the slowest and most boring one. It is recommended to side climb at the start of a match to avoid confrontation and gain altitude quickly. Ideally, one should climb to around 6,000–6,500 m to avoid being noticed by fighters below (and getting a marker in Arcade and Realistic Battles), and so that the planes that do notice it will have trouble climbing there quickly. At this altitude, airfield AA defences are also not a threat.

• Medium altitude bomber: Alternatively, one can maintain around 3,000–4,000 m altitude and flank around the map towards bases. It is recommended to use this playstyle when the aircraft is fully upgraded, as there is a higher chance of being attacked by enemy fighters who see the Yer-2 as easy prey. It is highly recommended to avoid flying through the middle of the battlefield at all costs, as this is where most fighters tend to concentrate their attention on.

It is also important to note that the Yer-2 cannot spawn on airfields in Simulator Battles, as the take-off run is too long. It will thus be freshly spawned in the air at the very rear edge of the team's side of the map. However, if a successful landing is made on one of the airfields, the Yer-2 can be respawned in the air over that airfield instead.

Manual Engine Control

MEC elements
Mixer	Pitch	Radiator			Supercharger	Turbocharger
		Oil	Water	Type
Not controllable	Controllable Not auto controlled	Not controllable Not auto controlled	Controllable Not auto controlled	Combined	Not controllable 1 gear	Auto controlled

Pros and cons

Pros:

• Massive payload, second best of any non-premium bomber at its battle rating.
• Relatively powerful defensive armament.
• Has two pilots for redundancy.

Cons:

• Very poor flight performance, especially with the maximum bomb load.
• Has only two engines; cannot sustain flight with only one engine working.
• Wings are massive and flimsy, and also littered with fuel tanks.
• Performance suffers significantly above 4,000 meters.
• Pilots are placed very close to each other.

History

In-game description

Yermolayev Yer-2 twin-engine, long-range bomber with ACh-30B engines, early production series

In order to improve their flight characteristics, production Yer-2s were later equipped with more powerful Mikulin AM-35 and AM-37 engines. Tests showed that planes with these engines outperformed the original Yer-2s (with M-105 engines) in speed, rate of climb, and service ceiling, but they were not launched into full-scale production due to the engines being too "raw" for service.

So the designers fitted the aircraft with Charomsky M-30B (Ach-30B, from 1944 on) diesel engines with tractor kerosene. The production of Yer-2s with M-30B engines began in late 1943 at Irkutsk Aircraft Factory No. 39.

The aircraft was equipped with two 1,500 hp ACh-30B diesel engines with AV-5LV-116 variable-pitch propellers featuring an larger diameter than that of the VISh-22Ye.

Externally, the diesel Yer-2s differed from their predecessors in several ways: more extended fuselage contours, rudder horn balance, and changes in the design of the engine ducted-radiator shutters. The capacity of the internal fuel tanks, equipped with an inert gas pressurization system, was increased.

The aircraft's defensive armament was reinforced. The forward ball mount, with a ShKAS machine gun, was replaced with a new NU-134 forward mount with a 12.7 mm Berezin UBT machine gun featuring 195-rounds of ammunition. The LU-MV-2 hatch mount with a 7.62-mm ShKAS was replaced with an LU-MV-2B turret that had a 12.7 mm Berezin UBT machine gun with a pneumatic reloading system and 275 rounds. Instead of the TAT-BT upper mount, a TUM-5 cannon turret was installed, which had a 20 mm ShVAK cannon with 200 rounds.

The bomb bay was lengthened, and the aircraft's maximum bomb capacity was increased up to 5,000 kg. The plane was able to carry 3,000 kg (3 FAB-1000 bombs) suspended externally and 2,000 kg more inside the bomb bay. The OPB-2M bomb sight was replaced with a PS-1 synchronized sight with a special fairing. The Yer-2 became the most powerful twin-engine bomber the Soviets had.

These modifications significantly increased the bomber's takeoff weight, which required new landing gear wheels with an enlarged diameter.

Only 2 Yer-2 aircraft were produced at Irkutsk Aircraft Factory No. 39 during the whole year of 1943. 47 more Yer-2s with a single-seat pilot's cockpit were built, until August 1944 when bombers with a two-seat pilot's cockpit started to be produced.

Media

Skins

• Skins and camouflages for the Yer-2 (ACh-30B) (e) from live.warthunder.com.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

• reference to the series of the aircraft;
• links to approximate analogues of other nations and research trees.

External links

Paste links to sources and external resources, such as:

• topic on the official game forum;
• other literature.